-er ddd dde ddg ddo ddr dds ddz de- ded dee deg deo der des dez dgd dge dgg dgr dgs dgz dod doe dog doo dor dos doz drd dre drg dro drr drs drz dsd dse dsg dso dsr dss dsz dzd dze dzo dzr dzs ed- edd ede edg edo edr eds eed eee eeg eeo eer ees egd ege egg ego egr egs eo- eod eoe eog eoo eor eos erd ere erg ero err ers erz es- esd ese esg eso esr ess eze ezo ezr ezs ezz g-d gdd gde gdo gdr gds ge- ged gee geg geo ger ges gez ggd ggg ggo ggr ggs ggz god goe gog goo gor gos goz grd gre grg gro grr grs gsd gse gsg gso gsr gss gzo gzr odd ode odg odo odr ods oed oee oeg oeo oer oes ogd oge ogg ogo ogs oo- ood oog ooo oor oos or- ord ore org oro orr ors orz os- osd ose osg oso osr oss oze ozo ozs ozz rdd rde rdg rdo rdr rds re- red ree reg reo rer res rez rgd rge rgg rgo rgr rgs rod roe rog roo ror ros roz rrd rrg rrr rrs rsd rse rsg rso rsr rss rze rzo sdd sde sdg sdo sdr sds sdz se- sed see seg seo ser ses sez sgd sge sgg sgo sgr sgs sod soe sog soo sor sos soz sr- srd sre srg sro srr srs ss- ssd sse ssg sso ssr sss ssz szd sze szr z-g zds zed zee zeo zer zes zez zgg zgs zo- zod zoe zog zoo zor zos zro zrs zse zsg zsz zzr zzs zzz